#include "widget.h"
#include "ui_widget.h"
#include <QPushButton>
#include <QDebug>
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    QPushButton* button = new QPushButton(this);
       button->setGeometry(0, 0, 100, 100);
       button->setText("按钮");
       //外边距
       button->setStyleSheet("QPushButton { border: 5px solid red; margin: 20px;} ");

           qDebug() << button->geometry();//输出按钮的几何信息，包括其位置和大小

}

Widget::~Widget()
{
    delete ui;
}

